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<td class="pageTitle" nowrap="true">Artifact: 事件</td><td width="100%">
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<td valign="top">该工作产品指定事情（涉及空间和时间）；比较不正式的说法是所发生的系统必须响应的事情。</td>
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<td>Work Product Kinds: <a href="./../../rup/workproducttypes/model_element_74CA3914.html" guid="_n7ZcgN7REdmjRZts2c4ZjQ">模型元素</a></td>
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<div class="sectionHeading">Purpose</div>
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<td class="sectionTableSingleCell"><a key="事件（event）" text="作为工件" name="XE_event__as_artifact" id="XE_event__as_artifact" class="index"></a><a id="Top" name="Top"></a><a key="事件（event）" text="用途" name="XE_event__purpose_of" id="XE_event__purpose_of" class="index"></a><a id="Purpose" name="Purpose"></a> 
<p>
    该工作产品用于获取事件的某些特征，例如频率、优先级和响应需求。
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<div class="sectionHeading">Relationships</div>
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<th class="sectionTableHeading" scope="row">Container Artifact</th><td class="sectionTableCell" colspan="2">
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<li>
<a href="./../../rup/workproducts/rup_design_model_2830034D.html" guid="{8CDAEAD4-5E84-4F50-87FD-3240ED047DE7}">设计模型</a>
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<th class="sectionTableHeading" scope="row">Roles</th><td class="sectionTableCell" width="42%"><span class="sectionTableCellHeading">Responsible:
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<li>
<a href="./../../rup/roles/rup_software_architect_DB0BF177.html" guid="{4AC346F0-E6FC-4D2C-8410-2EDF8DDDC91D}">软件架构师</a>
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</td><td class="sectionTableCell"><span class="sectionTableCellHeading">Modified By:
								</span>
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<li>
<a href="./../../rup/roles/rup_software_architect_DB0BF177.html" guid="{4AC346F0-E6FC-4D2C-8410-2EDF8DDDC91D}">软件架构师</a>
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<th class="sectionTableHeading" scope="row">Tasks</th><td class="sectionTableCell" width="42%"><span class="sectionTableCellHeading">Input To:
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<li>
<a href="./../../rup/tasks/capsule_design_BF66E39A.html" guid="{F13C1161-7F17-45E3-A8B7-03944A1FA6E4}">Capsule Design</a>
</li>
<li>
<a href="./../../rup/tasks/class_design_98F20FF9.html" guid="{27AE0601-2E95-4A6A-8EB3-0A4BA8E5626B}">类设计</a>
</li>
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</td><td class="sectionTableCell"><span class="sectionTableCellHeading">Output From:
								</span>
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<li>
<a href="./../../rup/tasks/identify_design_elements_E884AB82.html" guid="{97D7343A-6993-4AB7-8F86-4DAC8C9075C8}">确定设计元素</a>
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<div class="sectionHeading">Description</div>
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<th class="sectionTableHeading" scope="row">Main Description</th><td class="sectionTableCell"><p>
    事件用于识别和捕捉关于外部事件的信息，系统觉察到该外部事件并且必须响应它。还可以使用事件来捕获关于内部事件（例如异常）的信息。
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<th class="sectionTableHeading" scope="row">Brief Outline</th><td class="sectionTableCell"><a id="Brief Outline" name="Brief Outline"></a> 
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    事件的重要特征是：
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    <li>
        内部对外部 － 是外部事件还是内部事件？
    </li>
    <li>
        优先级 － 为了处理该事件，是否需要使其他处理暂挂？
    </li>
    <li>
        频率 － 该事件发生的频率？
    </li>
    <li>
        频率分发 － 该事件在固定时间间隔发生，还是存在突发现象？
    </li>
    <li>
        响应需求 － 系统必须以何速度响应事件（可能需要区分一般情况和最坏情况）。
    </li>
    <li>
        类型 － 是调用事件、时间事件、信号事件还是更改事件（有关定义请参阅<a class="elementLinkWithType" href="./../../rup/guidances/concepts/events_and_signals_734567DC.html" guid="1.800598287887014E-305">Concept: 事件和信号</a>）？<br />
    </li>
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<div class="sectionHeading">Tailoring</div>
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<th class="sectionTableHeading" scope="row">Representation Options</th><td class="sectionTableCell"><p>
    在状态表图和活动图的环境中，事件指的是状态过渡的触发器。
</p>
<p>
    但是，该工作产品涵盖了更具一般意义的“事件”，即系统必须响应的事件，包括信号、调用、状态更改或时间事件。
</p>
<p>
    另请参阅<a class="elementLinkWithType" href="./../../rup/workproducts/rup_signal_AD16C912.html" guid="{8CA124DA-A80C-45D7-BC65-BA6B4247FF11}">Artifact: 信号</a>。
</p>
<p>
    <a id="Tailoring" name="Tailoring"></a>
</p>
<p>
    可以在电子表格、数据库、需求管理数据库捕获事件特征，或作为软件架构文档中的表捕获事件特征。
</p>
<p>
    甚至可以作为类、已定型的 &lt;&lt;事件&gt;&gt;
    来捕获它们，但是只应将此作为捕获关于事件的管理信息的一种简便方法，不应与事件发生时传输的数据相混淆。如果调用事件导致数据传输，则应使用被调用操作的特征符来表示数据。如果事件是一个信号，则可以明确地对其数据进行建模（请参阅<a class="elementLinkWithType" href="./../../rup/workproducts/rup_signal_AD16C912.html" guid="{8CA124DA-A80C-45D7-BC65-BA6B4247FF11}">Artifact: 信号</a>）。
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<div class="sectionHeading">More Information</div>
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<th class="sectionTableHeading" scope="row">Concepts</th><td class="sectionTableCell">
<ul>
<li>
<a href="./../../rup/guidances/concepts/events_and_signals_734567DC.html" guid="1.800598287887014E-305">事件和信号</a>
</li>
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